English Product Name

Overview

The OK-TH Series Environmental Test Chamber is a precision-engineered temperature and humidity cycling system designed for rigorous reliability validation of electronic components, aerospace hardware, automotive ECUs, industrial control systems, and materials subjected to real-world climatic stress. Operating on the principles of forced-air convection, dual-stage refrigeration, and saturated steam humidification, the chamber delivers tightly controlled thermal and hygrothermal profiles in accordance with internationally recognized environmental simulation standards. Its architecture supports both steady-state and dynamic cycling protocols—including rapid transitions between extreme low-temperature, high-temperature, and high-humidity conditions—enabling accelerated life testing, qualification per MIL-STD-810, and compliance verification against IEC 60068-2 series, GB/T 2423, and GJB 150. The system’s robust thermal mass management, low-vibration compressor mounting, and sealed airflow path ensure minimal thermal overshoot and high reproducibility across repeated test cycles.

Key Features

• Full-color LCD touchscreen controller with intuitive navigation, real-time trend plotting, and seamless English/Chinese language switching—designed for operation by QA engineers and lab technicians without specialized training.
• Dual-stage hermetic compressors (R404A/R23) engineered for stable sub-−70°C operation, low acoustic emission (<65 dB(A)), and extended service intervals under continuous duty.
• SUS#304 stainless steel construction for both interior and exterior chambers, ensuring corrosion resistance in high-humidity and saline environments over extended service life.
• Multi-layer insulated viewing window with integrated conductive film heating to prevent condensation—enabling unobstructed visual monitoring of sample behavior during cold/humid phases.
• Double-lip high-tensile silicone gasket sealing at door interface, tested to maintain ≤0.5 Pa·m³/s leakage rate at differential pressures up to 500 Pa.
• Standard Ø50 mm test port on left side, fitted with removable brass gland for secure feedthrough of power, signal, or thermocouple lines without compromising chamber integrity.
• Integrated safety architecture including over-temperature cut-off, compressor high-pressure shutdown, humidity sensor fault detection, and real-time alarm logging with timestamped event history.

Sample Compatibility & Compliance

The OK-TH chamber accommodates a broad range of sample configurations—from PCB assemblies and battery packs to structural composites and coated metal substrates—within its scalable internal volume (80 L to 1000 L). Its design meets the mechanical and thermal requirements for test specimen mounting per IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-30 (cyclic damp heat), and GJB 150.3/150.4. All models are CE-marked and comply with EN 61000-6-2 (immunity) and EN 61000-6-4 (emission). Optional calibration certificates traceable to NIST or national metrology institutes (e.g., NIM, PTB) are available upon request. For regulated industries, the controller supports audit-ready data export (CSV/Excel) and optional 21 CFR Part 11-compliant user access controls and electronic signatures when paired with validated software modules.

Software & Data Management

The embedded controller logs all operational parameters—including chamber setpoints, actual values, ramp rates, alarm states, and runtime statistics—at user-selectable intervals (1 s to 60 min). Data export is supported via USB 2.0 port; no proprietary drivers required. Optional PC-based software (OK-EnviroLog Pro) enables remote monitoring, multi-chamber synchronization, custom profile scripting (including dwell, ramp, and hold sequences), and automated report generation compliant with ISO/IEC 17025 documentation requirements. All logged data includes UTC timestamps, operator ID fields, and checksum-verified integrity flags—facilitating GLP/GMP traceability and third-party audit readiness.

Applications

• Qualification testing of avionics modules per DO-160 Section 4 (temperature) and Section 10 (humidity).
• Thermal shock screening of lithium-ion battery cells prior to UL 1642 or UN 38.3 certification.
• Coating adhesion evaluation (e.g., automotive paint systems) under cyclic condensation and UV exposure (when integrated with external UV sources).
• Validation of IP67-rated enclosures under combined low-temperature soak and high-humidity ingress testing.
• Material aging studies for polymer seals, elastomers, and optical adhesives exposed to tropical climate profiles (e.g., 40°C/95% RH for 168 h).
• Reliability assessment of medical device electronics under IEC 60601-1 Clause 10.2 (environmental conditions).

FAQ

What temperature and humidity profiles can the OK-TH chamber execute?

It supports static, ramp-and-soak, and full cyclic profiles—including simultaneous temperature/humidity sweeps, stepwise transitions, and dwell periods—with programmable ramp rates and hold durations. Profiles may be imported from CSV or defined via the touchscreen interface.

Is the chamber suitable for long-term continuous operation (e.g., 1000-hour tests)?

Yes—its dual-stage refrigeration system, redundant safety interlocks, and predictive maintenance alerts enable unattended operation for up to 30 days, provided ambient cooling water or forced-air ventilation meets specified inlet conditions.

Can the controller be integrated into a central laboratory MES or LIMS?

Via optional Modbus TCP or Ethernet/IP communication modules, the chamber supports real-time data streaming to enterprise-level systems for centralized test orchestration and quality analytics.

Does the system include factory calibration documentation?

Each unit ships with a Certificate of Conformance and a baseline calibration report for temperature (±0.3°C) and humidity (±2.0% RH) sensors, verified using traceable reference standards.

Are custom internal configurations—such as additional shelves or non-standard test ports—available?

Yes; OK Instruments offers engineering consultation and OEM customization, including reinforced floor plates, inert gas purge interfaces, and EMI-shielded variants for sensitive measurement applications.